SAP2017 - List of Authors (Cui, T.)

Paper	Title	Page
MOPH02	Beam Extraction Design for a 230 MeV Superconducting Cyclotron	28
	M. Li, S. An, T. Cui, T. Ge, J.C. Qin, C. Wang, S.M. Wei, D.S. Zhang, T.J. Zhang CIAE, Beijing, People's Republic of China
	Proton Therapy is a high accuracy cancer treatment way with little side effects and widely investigated in recent years. Introducing superconducting technologies, China Institute of Atomic Energy has designed a cyclotron to extract 230 MeV proton for cancer therapy. Extracted beam loss is one of the very crucial parameter in this machine. A low beam loss has benefit in reducing the dose level inside the cyclotron and preventing device damage, and consequently keeps the machine operate stable in long time. Two electrostatic deflectors are installed in the adjacent magnet hills to deflect the beam for extraction. The Vr=1 resonance and precession motion are introduced in extraction region to enlarge the turn separation. After the deflectors, passive magnetic channels provide radial focusing force to restrain the beam dispersion in the edge field. In this paper, the design process and simulation results will be introduced in detail. Also, the extraction element layout will be illustrated.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-SAP2017-MOPH02
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Paper

Title

Page

Beam Extraction Design for a 230 MeV Superconducting Cyclotron

28

M. Li, S. An, T. Cui, T. Ge, J.C. Qin, C. Wang, S.M. Wei, D.S. Zhang, T.J. Zhang
CIAE, Beijing, People's Republic of China

Proton Therapy is a high accuracy cancer treatment way with little side effects and widely investigated in recent years. Introducing superconducting technologies, China Institute of Atomic Energy has designed a cyclotron to extract 230 MeV proton for cancer therapy. Extracted beam loss is one of the very crucial parameter in this machine. A low beam loss has benefit in reducing the dose level inside the cyclotron and preventing device damage, and consequently keeps the machine operate stable in long time. Two electrostatic deflectors are installed in the adjacent magnet hills to deflect the beam for extraction. The Vr=1 resonance and precession motion are introduced in extraction region to enlarge the turn separation. After the deflectors, passive magnetic channels provide radial focusing force to restrain the beam dispersion in the edge field. In this paper, the design process and simulation results will be introduced in detail. Also, the extraction element layout will be illustrated.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-SAP2017-MOPH02

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)